Selection Sort Algorithm Explained (Full Code Included) - Python Algorithms Series for Beginners

Selection Sort Algorithm Explained (Full Code Included) - Python Algorithms Series for Beginners


Full Code From This Example:

YouTube Description:

Continuing the Python algorithm series with Selection Sort. Check out the full playlist here: The Selection Sort Algorithm starts by setting the first item in an unsorted list as the position with the lowest (minimum) value. We then use this to compare each of the items to the right. Whenever we find a new item with a lower value, that becomes our new minimum value and we continue on. After one iteration of the selection sort algorithm, we create two sublists. One will be for unsorted items and the other will be for sorted ones. We move the minimum item from the unsorted sublist into the last position of our sorted sublist. After we finish all the iterations, we should be left with only the largest number in our unsorted sublist (which is now sorted to the highest position as it is the highest value.) The selection sort algorithm has a complexity of O(n^2) still but nearly always outperforms the bubble sort algorithm in situations where writing is important (fewer switches, more efficient per iteration). If you had any questions about the selection sort algorithm, or any of the other algorithms in this series - please let me know in the comments below! Join The Socials FB - Insta - Twitter - LinkedIn - GitHub - Thanks so much for all the support! 5390+ subscribers at the time of writing. Super awesome. I still get so hyped that I get more than 4 views on a new upload. So thankful for you all. I appreciate all the kind words, comments, and support. #Python #Algorithm #SelectionSort ***************************************************************** Full code from the video: def selection_sort(list_a): indexing_length = range(0, len(list_a)-1) for i in indexing_length: min_value = i for j in range(i+1, len(list_a)): if list_a[j] #less than list_a[min_value]: #"angled brackets not allowed in youtube description" min_value = j if min_value != i: list_a[min_value], list_a[i] = list_a[i], list_a[min_value] return list_a print(selection_sort([7,8,9,8,7,6,5,6,7,8,9,0])) Packages (& Versions) used in this video: Python 3.7 Atom Text Editor ***************************************************************** Code from this tutorial and all my others can be found on my GitHub: Check out my website: If you liked the video - please hit the like button. It means more than you know. Thanks for watching and thank you for all your support!! Always looking for suggestions on what video to make next -- leave me a comment with your project! Happy Coding!

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Derrick Sherrill

By: Derrick Sherrill

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